From: Gregory Mirsky <gregory.mirsky@ericsson.com>
To: Lou Berger <lberger@labn.net>, "draft-ietf-mpls-residence-time@ietf.org"
 <draft-ietf-mpls-residence-time@ietf.org>
Thread-Topic: [mpls] I-D Action: draft-ietf-mpls-residence-time-03.txt
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Date: Thu, 18 Feb 2016 15:58:54 +0000
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Subject: Re: [mpls] I-D Action: draft-ietf-mpls-residence-time-03.txt
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Hi Lou,
greatly appreciate your thoughtful comments. We updated the draft and uploa=
ded it as -04. Please find more details in-line and tagged GIM>>.
Hope we're converging and are really close to completely address your very =
helpful comments.

	Best regards,
		Greg

-----Original Message-----
From: Lou Berger [mailto:lberger@labn.net]=20
Sent: Tuesday, February 16, 2016 3:45 AM
To: draft-ietf-mpls-residence-time@ietf.org
Cc: mpls@ietf.org
Subject: Re: [mpls] I-D Action: draft-ietf-mpls-residence-time-03.txt

 Greg,

Thanks for the changes. I have some  comments on this version:

- I don't think the role of rro is clear in this rev. It references hop cou=
nt in the narrative, but then has no associated required processing.  I rea=
d it as vestigial text that can be dropped, but perhaps not. Either way thi=
s should  be clarified.
GIM>> Added the following sentence towards end of Section 4.6:
	The calculated  value is used by the LSR as TTL value in outgoing label to=
 reach the  next RTM capable LSR on the LSP.

- given that the  RTM_SET Sub-object is no longer carried in the rro, I thi=
nk it would be clearer to align the name with other LSP attribute TLVs.=20
(See
http://www.iana.org/assignments/rsvp-te-parameters/rsvp-te-parameters.xhtml=
)
. So perhaps RTM_SET TLV and simply RTM_SET for short (and in place of RRSO=
)?
GIM>> Thank you, accepted and changed text accordingly.

- The last paragraph of 4.7 needs to be updated to reflect that there isn't=
 a new object being introduced and that RTM_SET is carried as an attribute =
tlv.
GIM>> Done.

- there are no processing rules for RTM_SET sub-TLVs.
GIM>> That is very good point. In reviewing processing of RTM_SET sub-TLVs =
we agreed that duplicate sub-TLV is indication of misbehaving LSR and canno=
t be interpreted. Hence we propose to interrupt signaling LSP and generate =
PathErr with new Error Code. Once decided that we updated processing of dup=
licate RTM_SET TLV to behave in the similar manner, generate PathErr with d=
istinct new Error Code. Updated IANA Consideration section accordingly to r=
equest two new Error Codes.

That's it.

Thanks,
Lou








On February 12, 2016 11:47:43 AM internet-drafts@ietf.org wrote:

>
> A New Internet-Draft is available from the on-line Internet-Drafts direct=
ories.
> This draft is a work item of the Multiprotocol Label Switching of the IET=
F.
>
>         Title           : Residence Time Measurement in MPLS network
>         Authors         : Greg Mirsky
>                           Stefano Ruffini
>                           Eric Gray
>                           John Drake
>                           Stewart Bryant
>                           Alexander Vainshtein
> 	Filename        : draft-ietf-mpls-residence-time-03.txt
> 	Pages           : 25
> 	Date            : 2016-02-12
>
> Abstract:
>    This document specifies G-ACh based Residence Time Measurement and
>    how it can be used by time synchronization protocols being
>    transported over MPLS domain.
>
>    Residence time is the variable part of propagation delay of timing
>    and synchronization messages and knowing what this delay is for each
>    message allows for a more accurate determination of the delay to be
>    taken into account in applying the value included in a PTP event
>    message.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-mpls-residence-time/
>
> There's also a htmlized version available at:
> https://tools.ietf.org/html/draft-ietf-mpls-residence-time-03
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-mpls-residence-time-03
>
>
> Please note that it may take a couple of minutes from the time of=20
> submission until the htmlized version and diff are available at tools.iet=
f.org.
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>



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From: "internet-drafts@ietf.org" <internet-drafts@ietf.org>
To: Alexander Vainshtein <Alexander.Vainshtein@ecitele.com>, Gregory Mirsky
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